mèn​mèn​bù​lè

depressed

闷闷不乐 (悶悶不樂) mèn​mèn​bù​lè
depressed idiom
feeling dejected, unhappy, or in low spirits, often characterized by a quiet or gloomy demeanor

Ever since he failed the exam, he has been depressed all day.

Frequency

Movie subtitles
2.50 per million appears in 1% of films
Written text
0.962 per million

Sources

Definitions
CC-CEDICT